Home / 20,777.58-28,704.42-13,624.56

Finding the Fourth Proportional to 20,777.58, 28,704.42 and 13,624.56

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Solution

The fourth proportional to 20,777.58, 28,704.42 and 13,624.56 is: 18,822.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,777.58 : 28,704.42 = 13,624.56 : x
  2. Step 2: Convert to fraction form
    20,777.58/28,704.42 = 13,624.56/x
  3. Step 3: Cross multiply
    20,777.58x = 28,704.42 × 13,624.56
  4. Step 4: Simplify right side
    20,777.58x = 391,085,092.56
  5. Step 5: Solve for x
    x = 391,085,092.56/20,777.58
  6. Step 6: Final answer
    x = 18,822.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.